Machine for scouring heels.



1 PATENTED JULY 7, 190's. W. BrARNOLD; momma FOR scotmme HEELS. 5,mmmomm1.11.1901.

UNITED STATES Patented m *7, 1903.

-ATEi\ T OFF CE.

MACHINE FOR SCOURING HEELS.

SPECIFICATION forming part of Letters Patent N 0. 732,814, dated July'7, 1903. Application filed April 11 1901. Serial No. 55,361. (Nomodel.)

Machines for Scouring Heels, of which the fol:

lowing description, in connection with the accompanying drawings, is aspecification,

like letters on the drawings representing like parts.

Considerable expense, time, and labor are at present consumed in thenecessary operation of preparing leather heels for the finishingoperation, this being usually done by scouring them on sandpaperbuffing-Wheels.

My invention comprises in its general embodiment a series of flexibleabrading-disks of sandpaper of large area, which, although individuallyvery flexible and frail, are used in considerable. numbers superimposeddirectly upon each other and secured at their center only, beingentirely unrestrained at all other points and free to stand more or lessapart excepting at the center.

One object of my invention is to prevent as far as possible the-rapidwearing out or.

tearing of the sandpaper, or, in other words, to lengthen its lifeandjefficiency while obtaining a quick and rapid "abrading-surface,

and I have found. that by employing a hum-, ber of sheets of sandpapermounted as above 1 explained on a shaft at one sideor support- Iing-face of a back or disk the active sheet will stand out firmly andstronglywith much less liability to tear thanif used singly, so thatwhen a top lift of a heel is pressed against' the same the nails or thelike therein may be pressed firmly againstthe face of the sandpaperwithout materially disturbing its path of rotation and without tearingit, the sandpaper at the point of pressure yielding inwardly slightly,but resuming at once its'circular path of rotation upon passing the nailor other article pressed against it, the body of slightly-separated andrapidly-revolving sheets of-sandpaper before mentioned providing aresilient cushion and permitting the abrading-sheet to yield under thepressure of thework and yet supporting the same and reinforcing thenatural tendency of the sandpaper to maintain its path of rotation,whereas when used alone a single sheet of sandpaper would in specialcushion-like backings.

be disturbed in its 'rotative movement and actually torn or destroyedunder the same pressure.

The constructional details and further advantages of my invention willbe pointed out in the course of the following description,

reference being bad to the accompanying drawings, illustrative of oneform of my invention, and the latter will be more particularly definedin the appended claims, also forming a part of this specification.

In the drawings, Figure lshows my invention in front elevation. Fig. 2is a vertical sectional view thereof, taken on the line 2 2, Fig. 1.Fig. 3 is a horizontal sectional view taken on the line 3, Fig. 2.

It will be understood that my invention may be mounted and operated byany convenient means, being herein shown as mounted on a stand (1.,having a bearing a. at its up per end in which is journaled a shaft 19,driven by a high-speed pulley 19, secured thereto at one side of thebearing, while at the other side of the bearing is a disk 0, having ashoulder or flange c for holding an operating member 12 of the clampingdevice. On the face of the disk 0 is preferably mounted a felt pad 0 andin front of this are the sheets of sandpaper c, it being usual to securea large number of sheets in place atthe start and remove them one by oneas they becomeworn.

his not new to use sandpaperfor scouring heels; but as heretofore usedin rotary{scourers it has been used a singlesheet at a time,

being pressed directly on the smooth and usually hard carrying-surface,so that when in use the heel, and especially the nails thereof, havebeen shoved against the sandpaper, the latter has worn away rapidly, andac c'ordingly various inventions have been made I have found, however,that I can get all the cushion required and-can produce a yielding andyet durable and permanent abrading-surface simply by securing aplurality'of sheets at their center to a highspeed disk. .The high speedof rotation of the wheel. or disk will maintain the sheets of sandpaperperfectly flat and sufficiently stiff to endure theheavy pressurebrought upon them'in scou ring heels and shoe-bottoms, the severalsheets: of sandpaper being free and unrestrained excepting at theircenter, whereby they may separate sufficiently to give a superiorcushioning effect, permittingthe sandpaper surface to conform instantlyto the changing surface of the heels while scouring the leather andnails thereof down smooth and even. Not only is the scouring effectrendered extremely sensitive and rapid, thereby permitting a largenumber-of heels to be done in agiven length of time, but the life of thesandpaper is increased, as it does not wear away so rapidly when it cangive slightly. When a sheet becomes smooth, the operator simply catchesthe sheet at its edge and tears it off instantly, without anymanipulation of the clamp, and if a ragged edge should project slightlyfrom the center it is of little importance, as the area at the center isnecessarily small.

Any kind of suitable clamp may be employed; but I prefer to use the formherein shown, which consists of a washer or circular clamping-plate 0having a hole at one side of the center to fit over the securing buttonor head 0 of the clamping-bolt, and a neck a to slip down over the necka of said bolt behind said head, as will be clearly understood viewingFig. l in connection with Fig. 2. The bolt is provided with an elongatedopening 0 in which an eccentric hub c from the operating member 0 rests,there being preferably a spring 0 clamped behind the clamping-bolt in arecess provided axially of the shaft '1) for normally maintaining thebolt under a tendency to move out- Wardly to the dotted-line posit-ion,Fig. 3.

I am aware that it is not new to provide a central clamp for clamping aplurality of parts together, and I am also aware that this has been donein buffing-wheels in which the peripheral edge of the wheel constitutesthe buffing-surface, said wheels being made of such material as sheetsof leather and cloth, and therefore I wish it clearly understood that Ido not in any sense intend to claim such construction; but rather myinvention resides in the discovery that by employing a central clamp fora plurality of disk-face scouringsheets for shoe bottoms and heels andleaving claim as new, and desire to secure by Letters Patent, is

1. A machine for scouring heels and shoebottoms, comprising a stand, ashaft, a disk mounted on said shaft, a plurality of sheets of sandpapersecured on one face of said disk, a single clamping device for saidsheets, said clamping device being located at the center of said disk,and the sheets extending without constraint from said clamping device totheir extremeperipheral edges, and means for rotating said disk andsheets at high speed.

2. A machine for securing heels and shoebottonis, comprising a stand, ashaft, a disk mounted on said shaft, a plurality of sheets of sandpapersecured on one face of said'disk, a single clamping device for saidsheets, said clamping device being located at the center of said disk,and the sheets extending Without constraint from said clamping device totheir extreme peripheral edges, and means for rotating said disk andsheets at high speed, said clamping device consisting of a bolt heldaxiallyin the end of said shaft, and provided with a quick-actingoperating member for moving it in and out, and at its outer end having aremovable Washer or clamping-plate. 4

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILLIAM B. ARNOLD.

Witnesses:

GEO. H. MAXW'ELL, GEO. W. GREGORY.

